Refrigerating coil



sept, 11, 192s. S. C. BLOOM REFRIGERATING COIL Filed June 2, 1927 Patented Sept. ll,

UNITED STATES -BAI'UEL C. BLOCH, OF CHICAGO, ILLINOIS.

IEFBIGERATDWG COIL.

Application med June 2,'

This invention relates to improvements in refrigerating coils and more especially to such a coil of the boiler ty with headers joined by a plurality of con ucting or circulating plpes.

My improved refrigerating coil is adapted for use in connection with any refrigerating apparatus, such coil constituting the* expansion coil or chamber in which the refrigerant expands and thus absorbs heat. The principal parts of ordinary refrigerating apparatus such as the compressor, condenser, and the like, are oldin the art and their manner of use is well known; and consequentlyit is unnessar to show the same here. This invention re ates more particularly to the refrigerating coil or expansion chamber adapted for use in any ordinary refrigerating system and consequently such refrigerating coil or expansion chamber only will be shown and described in this application.

One of the features of my invention is the provision of such a coil that will insure a uniform and even distribution of the refrigerant through the parts thereof, thus giving all parts of the coil a substantially uniform temperature.

The coil is so constructed that practically only dry gas is withdrawn from the same by the pump. Even though refrigerant 1n 1ts liquid phase, is present at high levels in the coil, the possibility of withdrawal of the same from the coil by the pump is reduced to a minimum.

My improved coil is, also, so constructed that it may be easily cleaned, drained and emptied of foreign substances.

Other features and advantages of my invention will appear more fully as I proceed with my specification. v

In that form of invention embodying the features of my invention shown in the accompanying drawings, Fig. 1 is a view in perspective of my improved coil, Fig. 2 is a view taken as indicated by line 2 of Fig. 1 and Fig. 3 is a view taken as indicated by line 3 of Fig. 1.

As shown in the drawings, the coil comprises an upper suction header 10 and a lower liquid header 11 joined by a row of outwardly bowed connecting or circulating pipes 12, 12 on each side. The pipes on one side are preferably staggered in respect to those on the other. 13 indicates a liquid feed pipe com- 56 ing from the compressor (not shown) and 1927. serial no. 196,093.

14 indicates a dry pipe leading from the coil to the compressor '(not shown).

The liquid feed -pipe 13 enters the liquid header 11 at the bottom in the center and projects upwardly a short distance inside. Its upper end is threaded into a liquid distributing header 15 centrally arranged in the header 11 and extending substantially the entire length of the same. The distributing header 15 is preferabl supported in posltion by a lug 16 welde to it near each end. The liquid distributing header 15 is provided with a plurality of outlets 17 distributed throughout its length. These outlets should be suiicient in number and size and so disrov tributed as to give a substantially uniform* of these openings is yto permit entirel drain-l i'ng and emptying of the coil when desired. It will be seen that these openings are substantially flush with' the bottom of the header 11; and, therefore, if desired, the coil may be entirely drained or emptied through these openings by withdrawing the contents through the pipe 13. If desired this may be accomplished by reversing the action of the pump. Such suction through the pipe 13 will serve to empty the coil of any accumulation of oil or any other foreign matter that it may contain.

A dry pipe 14 projects inside of the upper header 10 throughout substantially the entire length of the same as indicated by 14a and is arranged very close to the top thereof. Its extreme end is preferably supported by a lug 19 formed on the end of the header 10. The top of the dry pipe 141- is provided with suction holes or openings 20, 2O which lie close to the upper wall of the header 10, as shown. By means of this construction, likelihood of liquid refrigerant entering the holes 20 is reduced to a minimum. Since these suction holes are arranged at the very highest level in the coil, it will be seen that only the driest as is permitted to enter the same.

VVhi e I have shown and described but a single embodiment of my invention, it is to be understood that it is capable of many modifications. Changes, there-fore, in the construction and arrangement may be made without departing from the spirit and scope of the invention as disclosed in the appended claims, in which it is my intention to claim all novelty inherent in my invention as broadly as possible in View of the prior art. j

What I claim as new,and desire to secure by Letters Patent, is:

1. A refrigerating coil comprising; an lipper suction header; a lower liquid header; a plurality of circulating pipes joining said headers; a dry pipe connected to the suction header; a .liquid distributing header in the liquid, header provided with a plurality of outlets; and a liquid feed pipe connected to said liquid distributing header.

2. A refrigerating coil comprising; an upper suction header; a lower liquid header; a plurality of circulating pipes joiningsaid headers; a dry pipe connected to the suction header; a liquid distributing header centrally arranged in the liquid header; and a liquid feed pipe connected to said liquid distribut ing header.

3. A i-ei'rigerating coil comprising; an upper suction header; a lower liquid header; a

headers; a dry pipe connected to the suction header; a liquid distributingheader in the liquid header extending substantially the entire length of the saine; and a liquid 'feed pipe connected to said liquid distributing v header.

4. A refrigerating coil comprising; an iup-- -Wallf plurality of circulating pipes joining said liquid header and having its end connected '65 to the liquid distributingl hcadersaid liquid feed pipe being provided with a drain openinginside ot the liquid header, and substantially Hush with the bottoni thereof.

7. A refrigerating coil comprising; an upper suction header; a lower liquid header;

`a plurality ofcirculating pipes joining said headers; a liquid feed pipe connected to the liquid header; anda dry pipe connected to the suction header, the end of said dry pipe extending into said suction header, and lying near the upper Wall thereof, said end of the A. 4dry pipe lying in the suction header heling` provided with suction openings in its upper 8. A refrigerating coil comprising; an upper vsuction header; a lower liquid header; a plurality of circulating pipes joining said headers; a liquid feed pipe connected to the liquid header; and a dry pipe connected to the suction header, the end of said dry pipe extendinginto said suction header through substantially the entire length olf the saine.

9. A refrigerating coil comprising; an upper suction header; a lower liquid header; a plurality of circulating pipes joining saidi` headers; a liquid feed pipe connected to the liquid header; and a dry pipe connected to the suction header, the end ol' said dry pipe extending into said suction header through substantially the entire length of the saine, and being provided with openings througlr, out the entire length of said end.

In testimony whereof, I have hereunto set iny hand this 31st day of May, A. D. 1927.

SAMUEL C. BLOOM. 

